5IV7

Cryo-electron microscopy structure of the star-shaped, hubless post-attachment T4 baseplate


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.77 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Structure of the T4 baseplate and its function in triggering sheath contraction.

Taylor, N.M.Prokhorov, N.S.Guerrero-Ferreira, R.C.Shneider, M.M.Browning, C.Goldie, K.N.Stahlberg, H.Leiman, P.G.

(2016) Nature 533: 346-352

  • DOI: 10.1038/nature17971
  • Primary Citation of Related Structures:  
    5IV5, 5IV7, 5IW9

  • PubMed Abstract: 
  • Several systems, including contractile tail bacteriophages, the type VI secretion system and R-type pyocins, use a multiprotein tubular apparatus to attach to and penetrate host cell membranes. This macromolecular machine resembles a stretched, coiled spring (or sheath) wound around a rigid tube with a spike-shaped protein at its tip ...

    Several systems, including contractile tail bacteriophages, the type VI secretion system and R-type pyocins, use a multiprotein tubular apparatus to attach to and penetrate host cell membranes. This macromolecular machine resembles a stretched, coiled spring (or sheath) wound around a rigid tube with a spike-shaped protein at its tip. A baseplate structure, which is arguably the most complex part of this assembly, relays the contraction signal to the sheath. Here we present the atomic structure of the approximately 6-megadalton bacteriophage T4 baseplate in its pre- and post-host attachment states and explain the events that lead to sheath contraction in atomic detail. We establish the identity and function of a minimal set of components that is conserved in all contractile injection systems and show that the triggering mechanism is universally conserved.


    Organizational Affiliation

    École Polytechnique Fédérale de Lausanne (EPFL), BSP-415, 1015 Lausanne, Switzerland.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Baseplate wedge protein gp6ABBFBGEAEBQRABBFBGEAEBQRghwx
660Escherichia virus T4Mutation(s): 0 
Gene Names: 6
Find proteins for P19060 (Enterobacteria phage T4)
Explore P19060 
Go to UniProtKB:  P19060
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Baseplate wedge protein gp7 CCAECSiy1032Escherichia virus T4Mutation(s): 0 
Gene Names: 7
Find proteins for P19061 (Enterobacteria phage T4)
Explore P19061 
Go to UniProtKB:  P19061
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Baseplate wedge protein gp8AACBCCDEEDEETAACBCCDEEDEETUjkz
334Escherichia virus T4Mutation(s): 0 
Gene Names: 8
Find proteins for P19062 (Enterobacteria phage T4)
Explore P19062 
Go to UniProtKB:  P19062
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Baseplate wedge protein gp9ABACADCDCECFEFEGABACADCDCECFEFEGFFAGHVWXlmn
288Escherichia virus T4Mutation(s): 0 
Gene Names: 9
Find proteins for P10927 (Enterobacteria phage T4)
Explore P10927 
Go to UniProtKB:  P10927
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Baseplate wedge protein gp10AEAFAGCGDADBFBFCAEAFAGCGDADBFBFCFDIJKYZaopq
602Escherichia virus T4Mutation(s): 0 
Gene Names: 10
Find proteins for P10928 (Enterobacteria phage T4)
Explore P10928 
Go to UniProtKB:  P10928
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Baseplate wedge protein gp11BABBBCDCDDDEFEFFBABBBCDCDDDEFEFFFGLMNbcdrst
219Escherichia virus T4Mutation(s): 0 
Gene Names: 11
Find proteins for P10929 (Enterobacteria phage T4)
Explore P10929 
Go to UniProtKB:  P10929
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
Baseplate wedge protein gp25 BDDFGAOeu132Escherichia virus T4Mutation(s): 0 
Gene Names: 25
Find proteins for P09425 (Enterobacteria phage T4)
Explore P09425 
Go to UniProtKB:  P09425
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
Baseplate wedge protein gp53 BEDGGBPfv196Escherichia virus T4Mutation(s): 0 
Gene Names: 53
Find proteins for P16011 (Enterobacteria phage T4)
Explore P16011 
Go to UniProtKB:  P16011
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.77 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-05-18
    Type: Initial release
  • Version 1.1: 2016-05-25
    Changes: Database references
  • Version 1.2: 2016-06-08
    Changes: Database references
  • Version 1.3: 2017-08-30
    Changes: Data collection
  • Version 1.4: 2018-02-07
    Changes: Data collection